Google Nest Purchase Seen Improving Smart-Home Gizmo Connections

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Google Inc. is jumping into digital home automation with its acquisition of Nest Labs Inc., shining a spotlight on an unproven market that has so far been filled with expensive devices that can’t communicate with each other.

Nest, maker of a smart thermostat that learns users’ preferences and can be controlled from a mobile device, is one of dozens of companies from Parrot SA to Royal Philips NV that have developed everything from plant sensors to light bulbs that link to the Web and can be monitored remotely.